A) \[\alpha -\]particle is heavier than electron
B) \[\alpha -\]particle is positively charged
C) mostly part of atom is hollow
D) \[\alpha -\]particle moves with high velocity
Correct Answer: C
Solution :
\[\alpha -\]particle scattering experiment of Rutherford proved that mostly part of atom is hollow, in which electron revolves in definite orbitals. The central part of atom is called nucleus. It is positively charged.
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